ruff: enable TC — flake8-type-checking (#11368)

## Problem

`TYPE_CHECKING` is used inconsistently across Python tests.

## Summary of changes
- Update `ruff`: 0.7.0 -> 0.11.2
- Enable TC (flake8-type-checking):
https://docs.astral.sh/ruff/rules/#flake8-type-checking-tc
- (auto)fix all new issues

test_runner/regress/test_wal_acceptor_async.py

@@ -4,9 +4,8 @@ import asyncio
 import random
 import time
 from dataclasses import dataclass
-from pathlib import Path
+from typing import TYPE_CHECKING
 
-import asyncpg
 import pytest
 import toml
 from fixtures.common_types import Lsn, TenantId, TimelineId
@@ -21,6 +20,11 @@ from fixtures.neon_fixtures import (
 from fixtures.remote_storage import RemoteStorageKind
 from fixtures.utils import skip_in_debug_build
 
+if TYPE_CHECKING:
+    from pathlib import Path
+
+    import asyncpg
+
 log = getLogger("root.safekeeper_async")
 
 
@@ -692,7 +696,7 @@ async def run_race_conditions(env: NeonEnv, endpoint: Endpoint):
         expected_sum += i
         i += 1
 
-    log.info(f"Executed {i-1} queries")
+    log.info(f"Executed {i - 1} queries")
 
     res = await conn.fetchval("SELECT sum(key) FROM t")
     assert res == expected_sum
@@ -766,7 +770,7 @@ async def run_wal_lagging(env: NeonEnv, endpoint: Endpoint, test_output_dir: Pat
     endpoint.start()
     conn = await endpoint.connect_async()
 
-    log.info(f"Executed {i-1} queries")
+    log.info(f"Executed {i - 1} queries")
 
     res = await conn.fetchval("SELECT sum(key) FROM t")
     assert res == expected_sum